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Finding the Fourth Proportional to 13,393.22, 18,482.72 and 7,424.51

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Solution

The fourth proportional to 13,393.22, 18,482.72 and 7,424.51 is: 10,245.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,393.22 : 18,482.72 = 7,424.51 : x
  2. Step 2: Convert to fraction form
    13,393.22/18,482.72 = 7,424.51/x
  3. Step 3: Cross multiply
    13,393.22x = 18,482.72 × 7,424.51
  4. Step 4: Simplify right side
    13,393.22x = 137,225,009.93
  5. Step 5: Solve for x
    x = 137,225,009.93/13,393.22
  6. Step 6: Final answer
    x = 10,245.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.